Use the dip switch to select equalization charging and night-light mode as below:
AUTO
Equalization
Charging*
Night-Light Mode
Dip Switch Settings
OFF
OFF
Dip switch 1
– OFF
Dip switch 2 –
ON
Dip switch 3 - OFF
OFF
ON
Dip switch 1 –
ON
Dip switch 2 –
ON
Dip switch 3 - OFF
ON
OFF
Dip switch 1 –
OFF
Dip switch 2
– OFF
Dip switch 3 - ON
ON
ON
Dip switch 1 –
ON
Dip switch 2 –
OFF
Dip switch 3 - ON
Table 4 Dip Switch Functions
4. PV Charge Control Mode
The SBC-6100 Series PV Charge Controller can operate in the several modes. This includes the
3-stage Charge Control, Equalization Charging Mode, DC Load Control Mode, NIGHT-LIGHT
mode, Temperature Sensing and Over Temperature Protection features.
4.1 3-Stage Charge Control
The main function of charge controller is to regulate the flow of electricity from the photovoltaic
panels to the batteries. In PV systems with batteries, the batteries must be protected from
overcharging and be maintained at fully charged state.
The PV Charge Controller uses the Micro-Processor and PWM ( Pulse Width Modulation ) to
give optimal and safe charging .
It makes varying On-Off pulses of electrical energy from the photovoltaic(PV) panel in charging
the battery according to the battery state. It has 3 stages of charging, as follows:
a. BULK CHARGE
– At this mode, a preset maximum constant amount of current (amps) is
fed into the battery as no PWM is present. As the battery is being charged up , the voltage of the
battery increases gradually.
b. ABSORPTION CHARGE
– After the preset voltage is reached (approximately 14.3 volts
for a 12 volt system) the voltage is then held constant. As the battery continues to be charged at
constant voltage, the charging current decreases. The charging voltage is held at the Bulk
Voltage Setting for one full hour with various rapid On-Off pulses (PWM). It then switches to
Float Charge Mode.
c. FLOAT CHARGE
–The controller will maintain the battery voltage at the float voltage
setting by giving shorter On-pulse charge to make up for any detected self discharge of the
battery. When the battery voltage drops below the Float Voltage Setting for a total period of 10
minutes, a new charging cycle is activated in Bulk or Absorption Charge.
Factory
Preset
P.5
